10 Best Substitutes for Cream of Tartar
Cream of tartar (potassium bitartrate) is a small but mighty pantry ingredient. It stabilizes egg whites for glossy meringues, helps prevent sugar crystallization in candies and frostings, and provides the acidic half of homemade baking powder. But what do you do when a recipe calls for cream of tartar and your jar is empty? Fortunately, there are several reliable substitutes that can save the day. This guide walks you through the 10 best substitutes, how and when to use each one, conversion tips, pros and cons, and practical recipe ideas so you can bake and cook with confidence.
What is cream of tartar and why is it used?
Cream of tartar is a byproduct of winemaking: a white, powdery acid (potassium hydrogen tartrate) that forms inside barrels. In the kitchen, it’s prized for three main functions:
– Stabilizing and adding volume to whipped egg whites (meringues, soufflés, angel food cake).
– Preventing crystallization in syrups and candy (smooth caramels, fudges).
– Acting as the acidic counterpart to baking soda in homemade baking powder for leavening.
Understanding which of these roles the cream of tartar plays in your recipe will help you choose the right substitute.
When you should — and shouldn’t — substitute
- Use a substitute when cream of tartar is being used as an acid (reacts with baking soda) or to stabilize/acidify (meringues, syrups).
- Don’t substitute if cream of tartar is used for a very specific chemical reaction in a delicate recipe unless you understand how the substitute changes moisture or flavor.
- Liquids (vinegar, lemon juice, dairy) change batter hydration; adjust other liquids accordingly.
- Always test: when in doubt, start with conservative amounts and tweak.
Below are 10 practical substitutes with clear guidance on when to use each.
10 Best Substitutes
1) Lemon juice
Why it works: Lemon juice is a natural acid (citric acid) and is one of the most commonly recommended substitutes. It stabilizes egg whites and can react with baking soda to provide leavening.
How to substitute:
– For stabilizing egg whites or preventing sugar crystallization: use 1 teaspoon lemon juice for every 1/2 teaspoon cream of tartar. (So for 1 teaspoon cream of tartar, use 2 teaspoons lemon juice.)
– When used with baking soda for leavening, pair proportionately (see recipe examples below).
Pros:
– Readily available in most kitchens.
– Adds a bright flavor—good in lemony baked goods.
Cons:
– Liquid: may slightly change batter consistency; reduce other liquid a bit if needed.
– Lemon flavor can be noticeable in delicate recipes.
Best uses: Meringues, frostings, candy syrups, and recipes where a citrus note complements the flavor.
Practical tip: If you’re stabilizing egg whites, add the lemon juice when egg whites are soft and start whipping to soft peaks.
2) Distilled white vinegar
Why it works: Like lemon juice, distilled white vinegar is a strong, neutral-tasting acid. It stabilizes egg whites and reacts with baking soda.
How to substitute:
– Use 1 teaspoon distilled white vinegar for every 1/2 teaspoon cream of tartar (same ratio as lemon juice).
Pros:
– Neutral flavor (less citrusy than lemon juice).
– Easy to measure and store.
Cons:
– Liquid: may affect batter hydration.
– Strong vinegar aroma can dissipate but may be undesirable in some recipes.
Best uses: Meringues, frostings, and baked goods where a neutral acid is preferred.
Practical tip: If you’re replacing cream of tartar in a candy or sugar syrup, a small amount of vinegar works well — but for non-acidic sugar syrup stabilization, corn syrup is often superior (see #8).
3) Citric acid (a.k.a. “sour salt”)
Why it works: Citric acid is a powdered acid found in citrus fruits. Because it’s dry and highly acidic, it’s one of the best dry alternatives to cream of tartar.
How to substitute:
– Use citric acid at about half to equal volume, depending on concentration. A practical starting point: use about 1/4 to 1/2 teaspoon citric acid for every 1/2 teaspoon cream of tartar. Because brands vary, start at the lower end and test.
Pros:
– Dry powder — no change to batter hydration.
– Very effective for stabilizing egg whites and making homemade baking powder.
Cons:
– Strong acid — use sparingly or eggs/final product can taste tangy.
– Not always in every pantry (but easy to buy).
Best uses: When you need a dry acid for meringues, making baking powder, or candy work.
Practical tip: To make 1 teaspoon of single-acting baking powder, combine 1/4 teaspoon baking soda + 1/2 teaspoon citric acid (plus 1/4 teaspoon cornstarch if storing).
4) Baking powder (commercial)
Why it works: Cream of tartar is the acid component of baking powder. When recipes combine cream of tartar and baking soda to create leavening, you can often replace both with commercial baking powder.
How to substitute:
– If the recipe calls for both cream of tartar and baking soda as the leavening system, replace the combination with 1 teaspoon baking powder for each 1/4 teaspoon baking soda + 1/2 teaspoon cream of tartar that would otherwise be used.
Pros:
– Simple swap for leavening; no extra steps.
– Readily available.
Cons:
– Baking powder already contains starch and a neutral acid mix; the timing of release (single vs double-acting) may differ slightly from homemade combinations.
– Not suitable when cream of tartar is used purely as a stabilizer (e.g., for sugar shells or candy).
Best uses: Quick breads, cakes, cookies where cream of tartar’s role is leavening.
Practical tip: If subbing baking powder for a cream-of-tartar-and-baking-soda combo, reduce any additional baking soda in the recipe accordingly.
5) Buttermilk
Why it works: Buttermilk is acidic and can react with baking soda to provide rise. Because it’s liquid, it also adds tenderness and flavor.
How to substitute:
– To add acidity, replace some of the recipe’s liquid with buttermilk. A common approach: for each 1/2 teaspoon cream of tartar, try replacing about 1/4 to 1/2 cup of the liquid with buttermilk and reduce any other liquid accordingly. Exact adjustment depends on recipe.
Pros:
– Adds richness and a pleasant tang.
– Great in pancakes, muffins, and quick breads.
Cons:
– Changes texture and flavor (may not be appropriate for neutral-flavored items or candy).
– Liquid substitution requires balancing other liquids.
Best uses: Pancakes, quick breads, biscuits, and recipes that welcome dairy tang.
Practical tip: If your recipe already includes baking soda, adding buttermilk will activate it and give lift. If it doesn’t, you may need to add a small amount of baking soda (usually 1/4 teaspoon per 1/2 cup buttermilk).
6) Plain yogurt
Why it works: Plain (unsweetened) yogurt is acidic and can be used similarly to buttermilk — it reacts with baking soda and adds moisture and flavor.
How to substitute:
– Replace some liquid in the recipe with plain yogurt. Use 1/4 to 1/2 cup plain yogurt in place of a similar amount of other liquid for each small amount of cream of tartar you’re replacing; reduce total liquid accordingly.
Pros:
– Thickens batters, adds tenderness and mild tang.
– Good for muffins, quick breads, and cakes.
Cons:
– Yogurt will change texture and can add a dairy flavor.
– Thicker than buttermilk; thinning with a little water may be necessary.
Best uses: Quick breads, muffins, cakes where dairy and tang are appropriate.
Practical tip: If using yogurt, thin it with a splash of milk or water to match the consistency of the liquid you’re replacing.
7) Sour cream
Why it works: Like buttermilk and yogurt, sour cream supplies acidity plus fat — useful when you want richness and a stable crumb.
How to substitute:
– Replace part of the liquid and fat in the recipe with sour cream. As a broad rule, use 1/4 to 1/2 cup sour cream to replace the acid function of 1/2 teaspoon cream of tartar; reduce other liquids accordingly.
Pros:
– Adds richness and moistness to baked goods.
– Great for dense cakes, coffee cakes, and rich muffins.
Cons:
– Heavier texture; not suitable for delicate meringues or candies.
– Flavor and richness may be unwanted in some recipes.
Best uses: Coffee cakes, dense muffins, pound cakes.
Practical tip: When adding sour cream, reduce the fat (butter/oil) slightly if the recipe already contains a lot of fat.
8) Light corn syrup (or glucose syrup)
Why it works: In candy-making, cream of tartar is often used to prevent sugar recrystallization. In those applications, an invert sugar like light corn syrup or glucose syrup is often a better functional substitute than an acid.
How to substitute:
– For sugar syrups and candy where cream of tartar prevents crystallization, add 1 to 2 tablespoons light corn syrup per cup of sugar in the recipe. Omit the cream of tartar.
Pros:
– Very effective at preventing crystallization in candies, frostings, and sugar glazes.
– Adds shine and a softer texture to syrups and caramels.
Cons:
– Adds sweetness and a slight corn flavor (usually not noticeable).
– Liquid — slightly changes moisture, but typical candy recipes account for this.
Best uses: Caramels, fudges, rock candy alternatives, syrups, and frostings.
Practical tip: Use light corn syrup (not high-fructose corn syrup) when possible for better texture in traditional candy recipes.
9) Tartaric acid (powder)
Why it works: Cream of tartar is a potassium salt of tartaric acid; pure tartaric acid powder (used in some kitchens) provides a similar acidity and is a close functional substitute.
How to substitute:
– Because tartaric acid can be stronger than cream of tartar by volume, start conservatively. A general guideline: begin with about half the volume (use 1/4 teaspoon tartaric acid for every 1/2 teaspoon cream of tartar) and adjust based on taste and reaction.
Pros:
– Dry powder — no change in batter hydration.
– Excellent for meringues and when you need a dry acid.
Cons:
– Not as common in typical home pantries.
– Potent — can impart tartness if overused.
Best uses: Meringues, homemade baking powder formulations, and any application that needs a dry acid.
Practical tip: When you’re using tartaric acid to make homemade baking powder, pair it carefully with baking soda and a bit of cornstarch for storage.
10) Apple cider vinegar
Why it works: Apple cider vinegar is a milder, fruitier acid compared with distilled white vinegar. It’s useful as a liquid acid in many baking applications.
How to substitute:
– Use 1 teaspoon apple cider vinegar for every 1/2 teaspoon cream of tartar (same substitution ratio as white vinegar and lemon juice).
Pros:
– Milder, slightly fruity flavor that can enhance certain baked goods.
– Readily available in most kitchens.
Cons:
– Liquid — affects hydration; flavor may be noticeable in delicate items.
– Not ideal for candy where a non-acidic anti-crystallizing agent (corn syrup) might be better.
Best uses: Baked goods (cakes, muffins) and recipes where a gentle tang is welcome.
Practical tip: If using apple cider vinegar with baking soda, add vinegar at the mixing stage so the reaction is captured in the oven.
Conclusion
Choose the substitute that best fits your recipe, then use the stated ratio and method for dependable results.
